Operational Amplifier Texas Instruments OPA2134PA, Dual, DIP-8

The Texas Instruments OPA2134PA is a dual operational amplifier in an 8-pin DIP package designed for high-performance audio and precision analog applications. Each channel features a JFET input stage for high input impedance, low bias current and matched characteristics between the two amplifiers. The device targets signal conditioning tasks such as preamplifiers, active filters and other audio circuitry where low distortion and low noise are important.

Advantages

The OPA2134PA offers low total harmonic distortion and low noise performance appropriate for hi-fi audio and precision analog signal paths. The dual matched amplifiers reduce channel-to-channel variation and simplify stereo or differential circuit designs. Its DIP-8 through-hole package provides ease of prototyping and replacement on PCB assemblies and breadboards.

Suitable for

• Audio preamplifiers and tone control circuits
• Active filters and equalizers
• Signal conditioning and low-noise amplification
• Headphone amplifiers and mixer channels
• Prototyping and repair of through-hole PCBs

Key specifications

• Configuration: dual operational amplifier (two independent op amps)
• Input stage: JFET front-end for high input impedance
• Package: 8-pin dual in-line package (DIP-8), through-hole
• Performance focus: low distortion and low noise for audio use
• Typical applications: precision analog and audio signal processing

How to use

Install the device into a compatible 8-pin DIP footprint on a PCB or into a DIP socket for prototyping. Observe correct orientation by aligning the package notch or index with the PCB silkscreen. Provide appropriate power supply rails within the device’s specified range, bypass power rails with decoupling capacitors near the supply pins, and follow recommended grounding practices to minimize noise and distortion. Implement standard op amp circuit topologies—such as inverting, non-inverting, differential, or active filter configurations—while selecting feedback and input components to meet desired bandwidth and gain.

Recommendations

For optimal audio performance, use low-noise resistors and quality film capacitors in signal paths, keep input and feedback traces short, and place supply decoupling capacitors as close as possible to the device power pins. When using the amplifier in stereo applications, match external components across channels to preserve channel balance.